Head motion for concentrating tables



E. DEISTER. HEAD MOTION FOR CONCENTRATING TABLES.

APPLICATION FILED AUG. 13. 1918.

Patented 0011; 11922.

24, 2 SHEETS-SHEET ll/l/l/E/l/TOR WITH/E8858:

ATTORNEY E. DEISTER.

HEAD MOTION FOR CONCENTRATING TABLES. APPLICATION FILED AUG. 13. I9I8.

Patented 001k. 24,

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A TTOR/VE Y 13 is adiagrammatic view illustrating the enemas on. at, eaa

EMIL DEIS'IER, 0F FORT WASZ'NE, INDIANA, AEJSTGNOR T0 IDEIfiTEIt MACHINEQUEE- PANY, 013 FORT WAYNE, INDIANA, ll. CORPORATION OF INDIANA.

HEAD MOTION FOR, GG'NCENTRAIING TABLES.

a lication filed August 13, 1918. Seria no. 249,663.

To all whom it may concern: 1

Be it known that I, EMIL Urns'rnn, residing at Fort Wayne, in the countyof rrllen and State of Indiana, acitizen of the United States, haveinvented or discovered certain new and useful Improvements in Headlilotions for Concentrating Tables, of which i1nprovement the followingis a specification.

The invention described herein relates to certain improvements in headmotion for concentrating tables and has for its object a construction inwhich motion is transmitted from a crank or eccentric through toggles'tothe table or other. object to be vibrated, said toggle members being soarranged relative to the crank or eccentric that the thrust resultingfrom moving the toggle members into alinement and the push of the crankor eccentric will approximately coincide in direction. The invention isherein.- after more fully described and claimed.

In the accompanying drawings forming a part of this specification, Fig.1 is a top plan view of. a head motion embodying the improvementsclaimed herein, the cover of the casing being removed; Fig. 2 is a sec--tional elevation the plane of section being indicated by the lineII'-TT, F 1; Figs.

3, 4c, and 5 are "views showing the moving parts or elements in forwardmid stroke, and back positions respectively; Fig. 6 is a sectionalelevation of the casing, the plane of section being indicated by thelinci VI VI, Fig. 1; Fig. 7 is a sectional detail view, the plane ofsection being indicated by the line VII- 7H, Fig. 1; Figs. 8 and 9 arerespectively transverse and longitudinal. sectional views of the roller;Fig. 10 is an end elevation of the rocker arm 5 Fig. 11 is a. plan Viewof the toggle arm and Fig. 12 is a sideelevation of the toggle, and Fig.

operation of th'ehead motion.

In the practice of the invention, the movable members or elements of thehead motion are enclosed within a suitable caslng which is provided witha removable cover 2 in order that the parts may be protected from dustand dirt,and is also adapted to form a suitable receptaclefor' oil forlubrieating the bearing portions of the movable members. Around theupper edge of the casing 1 is formed a seat for the cover the supportingelement of the seat being formed by aflange 3 and below the flange isformed a second or int ardlyprojecting flange 1 which is adapted tooperate as a baflie to prevent the splashing of the oil upwards onto theseat of the cover. The employ ment of this secondary baffle rendersitunnecessary to provide a packed joint between the cover and the casingto prevent the. es cape of oil. The driving shaft 5 is mounted insuitable bearings 6 formed outside of the casing and having caps 7adapted to be secured by suitable fmeans on top of the bearings. Beloweach of the bearings 6 is formed a pocket 8, which is in communicationwith the interior of the casing and forms a receptacle for oil which canbe car ried up onto the shaft 5 by means of an endless chain 9, therebyinsuring the constantlubrication of the bearings of the shafts. At aoint within the casing, the shaft 5 is provided with an eccentric 10 onwhich is loosely mounted a roller which may be of any suitableconstruction, but is preferably constructed as shown in Figs. 3., 8 andmit oil between the eccentric and the shell 12. This constructionensures. a suitable lubrication of the surfaces of the roller and theeccentric which are in contact. A toggle arm 15 has one end mounted upona pin 16 which is jeccentrically mounted in bearings 17 on the casing.This eccentric mounting of the pin affords means whereby the position ofthe toggle arm with reference to the rollermay be adjusted as requiredto vary the movement of the table as hereinafter described. In order tofacilitate the rotary adjustment of the pin-16, it is'provided with anangular extension 18 at one end and set screws 19 are provided forholding the pin in adjusted. positions. The toggle arm is provided,adjacent to its .free end, with a I the opposite direction is effected'not shown, which may be connected to the Figsf 3, 4, and 5.

' and, 26, or bearing concave seat along which the roller will roll backand forth on the rotation of the shaft 5. At a suitable point, one endof a toggle 21 is connected to the to gle arm. 15, the end of the togglebeing preferably split for the reception of a fin forming the back ofthe arm 15. The connection of the toggle with the toggle arm is for redby a pin 23 passing through the prongs of the toggle and the fin. Theopposite end of the toggle is adapted to bear and exert a thrust on therocker arm 2 In order to facilitate the removal of either the toggle armor the rocker arm without removing the shaft, it preferred that the 1wer end of the toggle should be formed with an open seat 25 as shown inFigs. 2, 3, 4i, 5, and 12, such seat being adapted to bear upon a pin 26passing through the prongs 27 at the end of the rocker arm as shown inFig. [0. Such construction will permit of the removal of either thetoggle or the rocker arm by a with drawal of the pin 16 or the pin 27 onwhich the rocker arm is mounted and without any disturbance of the shaft5 and its roller. In order to guide the toggle into position on the pin26, a rib 28 is formed on the casing or shell, the upper surface of thisrib being inclined and of such a height that 'thetoggle in sliding downthe same will be directed into position on the pin 26. The upper or postportion 29 of the rockerarm 24; is provided with suitable guides for ablock having on one side a bearing 30 for the pin 31, the ends of saidpin forming journals for beer ings on the ends of the yoke 32, adaptedto be connected to the table or other object to be vibrated. It will beunderstood that, 2 s a general practice in the art, the move ment of thetable in one direction is effected by the moving elements as hereinafterdescribed, while the movement of the table in by a spring table or tothe post or to any other moving part. i

In Figs. 3, 4, and 5, moving elements, towit: the shaft, eccentric,roller, toggle arm, toggle and rocker arm vith its post, are shown inforward, mid and rearward positions, respectively. These terms refer tothe position of the post 29 forming part of the rocker, arm and thetable connected thereto. In Fig. 8 the parts have been pulled to forwardposition by the spring and the return movements of the mechanism and thetablejare about to begin by the operation of the eccentric on the shaft5 which rotates in the direction of the arrow 02 in hen the parts are inthe positionjshown inFig's. 3, or, in" forward position, the axis oftheshaft 5 and the axes of the pins 2 3 g points of the toggle 2 1, are'outof alinement, the axis of the pin #4! moving downward and to the right.liy reason of this movement, the rocker arm will be turned on its pin 27not only by the action of the roller on the torn-lo arm but also bvreason of the straightening of the toggle ioint. In mid position asshown in Fig. at, the three points of the toggle are approximately inline and th further move ment of the rocker arm and post to rearposition will be due to the actionv of the encentric on the toggle arm.

in the operation of a concentrating table. it (lQfillllJlG that itsforward motion should be gradually accelerated, the rworsnl abrupt andthe return movemci'at gradually retarded. These desirable(haractcristics are full-v carried out in the operation of the mechanismdescribed herein.

is hereinhefore stated. the movement of the. rocker arm and post fromforward posh tion, as shown in Fig. 3, tmrards the mid position, shownin Fig. 4-, is due not only to the action of the eccentric forcing downthe toggle arm, but also to the movement of the center point or pin 25}of the toggle ioint into alinement with other points of the joint, andhence the movement of the rocker arm or post and table will be veryrapid from forward nosition. From mid position as shown in ig. l. themovement of the rocker arm will be due principally to the action'ottheeccei'itric and to a small degree to the moven'lcnt of the enter pointor pin 23 of the toggle to the right out of alinement with the otherpoints of the toggle and hence such n'rovonient will be slower. Fromrear position the movement of the table and the parts of the nccluenismwil be due to the action of the spring but controlled by the eccentricand the movement of the center point or" the toggle joint ".vh'ichmovements will be the reverse ol" those just des .ribcd. Theprelin'iinzirv return movement will be due to the movement of theeccentric allowing the ti 0 arm to rise until mid position andthereafter an zu-- celerated movement will be peri'n ttod. duo not onlyto the upward movement of the eccentric but also to the movement of thecenter point or pin 2 of the toggle out of alinement with the otherpoints of the joint.

It is characteristic of the inmroremont that the movement of the rockerarm is due not only to the straightening of the toggle joint but also tothe action of the eccentric which action is in the same direction asregards the effect on the rocker arm as the straightening of the toggle.

The improvement described herein enibodies What is known as a togglemechanism,

other ooints b moi in the knuckle or )in 7 a e l 23 in the arc of acircleha'ring the axis oi? the pin 16 as its center. It is a furthercharacteristic oi. the improvement that the toggle member formed by thearm 15 and the eccentric is in fact an extensible member, the length ofsuch member being increased and decreased on the rotation of the shaftbyan amount double the eccentricity of the eccentric 10, will beclearlyseen by reference to Fig. 13.

In the construction shown in Patent No. 1,088,682, granted March 3,1914i, to W. F. Deister, motion is transmitted from the lever 5 to thebell crank lever by a Wiping or sliding movement of theblock 8 on theroller 9; in other, words, the bearing of the block on the roller isvery narrow, being theoretically a line, and practical op eration hasshown that flat spots are soon formed on the roller and the apex of theblock is worn away. In the construction shown and described hereinmotion is transmitted from arm to the rocker arm 9A by a toggle member21 provided at its ends with seats or hearings for the pins 23 and 26,said seats having widths substantially equal to halt the perimeter ofthe pins. Continuous use for many. months has shown there is no materialWearing away of the surfaces of the pins and toggle member,

I claim herein myinvention:

1. In a head motion for concentrating tables the combination of an opentopped case, a shaft having an eccentricportion, on which is a looselymounted roller, suitable bearingsytfor the shaft on the case, a togglearm having one end pivotally supported within the shell and at one sideoi. the shaft and having its othcrend curved to receive the roller onthe eccentric, a rocker arm having a pivotal support on the oppositeside of the shaft, said arms being so arranged that their free endsoverlap below the eccentric portion of the shaft and a toggle havingpivotal bearingson the overlapping arms.

2. A mechanism for reciprocating concentrating tables, etc., having incombination a pivotally mountedmember adapted to be connected to thetable or other object, an eccentric, a toggle mechanism interposed between the eccentric and the pivoted mechanism, the several parts beingso arranged relative to one another that the knuckles of the togglemechanism may 2 move into and out of alinement with the axes of theeccentrio and the oint of bearingof the to nie on the pivoted member.

3. A head motion for impartinga reciprocatory movement to concentratingtables,

etc, having in combination an eccentric, two arms pivotally mounted onopposite SlClBSOf theeccentric, the tree ends of the arms overlapping onone side of the eccentric, a toggle interposed between and havingpivotal bearings on the arms, said members being so arranged that thepivotal points of the toggle will be caused to move into and out or?alinement witheach other and the axis of the eccentric on the movementof one of the arms by the eccentric,

t. In ahead motion for concentrating tables the combination of an opentopped case, a shaft having an eccentric portion on which. isa looselymounted roller, suitable bearings for the shaft on the case,a toggle armhaving one end pivotally supported Within the case and at one side ofthe shaftand having its other end curved to receive the roller on theeccentric, a rocker arm having a pivotal support on the opposite side ofthe shaft, said arms being so arranged that their free ends overlapbelow the eccentric portion of the shaft and a toggle having pivotalhearings on the overlap ping arms.

5. A head motion for inparting a reciprocatory movement to concentratingtables, etc, having in combination an eccentric, two arms pivotallymounted on opposite sides of the eccentric, the free ends of the armsoverlapping and provided with pins projecting laterally :l'rom the arms,a toggle interposed between the pins on the respective arms, and havinghearings on said pins approximately equal to half the peripheries of thepins, said members being so arranged that the points of bearing of thetoggle on the respective pins will be caused to move into and out of.aline'ment with each other and the axis of the eccentric on the movementof one of the arms bythe eccentric."

6. A mechanism for reciprocating concentrating tables, etc., having incombination a pivotally mounted member adapted to be connected to thetable or other object, an eccentric, a toggle mechanism interposed between the eccentric and the pivotal mechanism, the several parts beingso arranged relative to one another that the knuckles oil the togglemechanism may move into and out of alinemcnt with the axes of theeccentric and the point of bearing of the toggle on the pivotal member,an open topped case or shell for the reception of said mechanism, thesides of the case extending to such aheight that the bearingsot theseveral devices Will be below the upper edges of the case or shell lllliand 1- removable cover for the case or shell. hearings for said shaft,and :1 removable 10 7. A mechanism for ii'eciprocat-l'ng concover torthe case or $1101].

centrating tables, etc., having in coinbina- In testimony whereof I havehereunto .Wl tion a shaft, an eccentric mounted on the my hand. 5 shaft,arms piv'otally mounted on opposite EMU sides of the eccentric havingtheir free ends 1 overlapping, a toggle having pivotal bean Vitnesses:ings 0n the respective arms, an open topped RALPH L. Fnixerii-zs,

case or shell enclosing said parts and having SYNA IIANSER.

